USB interface physical characteristics are the same, from the appearance can not see whatOnly from the chip model1, click My Computer - Properties - Hardware Devices - Device Manager - Storage Volumes - General Volumes. There is USB information in the general. You can see the information about the USB you installed.2, in addition, you can also see that the usb1.1 device can only have 1.2M\/ s interfaceWhen you plug a USB 2.0 device into a USB 1.0 port, XP and VISTA willThe message \"This device can improve performance\" indicates that the USB port is 1.0